dnl Process this file with autoconf to produce a configure script.

dnl Version information.
m4_define([lemon_version_number],
          [m4_normalize(esyscmd([echo ${LEMON_VERSION}]))])
dnl m4_define([lemon_version_number], [])
m4_define([lemon_hg_path], [m4_normalize(esyscmd([./scripts/chg-len.py]))])
m4_define([lemon_hg_revision], [m4_normalize(esyscmd([hg id -i 2> /dev/null]))])
m4_define([lemon_version], [ifelse(lemon_version_number(),
                           [],
                           [ifelse(lemon_hg_revision(),
                           [],
                           [hg-tip],
                           [lemon_hg_path().lemon_hg_revision()])],
                           [lemon_version_number()])])

AC_PREREQ([2.59])
AC_INIT([LEMON], [lemon_version()], [lemon-user@lemon.cs.elte.hu], [lemon])
AC_CONFIG_AUX_DIR([build-aux])
AC_CONFIG_MACRO_DIR([m4])
AM_INIT_AUTOMAKE([-Wall -Werror foreign subdir-objects nostdinc])
AC_CONFIG_SRCDIR([lemon/list_graph.h])
AC_CONFIG_HEADERS([config.h lemon/config.h])

AC_DEFINE([LEMON_VERSION], [lemon_version()], [The version string])

dnl Do compilation tests using the C++ compiler.
AC_LANG([C++])

dnl Check the existence of long long type.
AC_CHECK_TYPE(long long, [long_long_found=yes], [long_long_found=no])
if test x"$long_long_found" = x"yes"; then
  AC_DEFINE([LEMON_HAVE_LONG_LONG], [1], [Define to 1 if you have long long.])
fi

dnl Checks for programs.
AC_PROG_CXX
AC_PROG_CXXCPP
AC_PROG_INSTALL
AC_DISABLE_SHARED
AC_PROG_LIBTOOL

AC_CHECK_PROG([doxygen_found],[doxygen],[yes],[no])
AC_CHECK_PROG([gs_found],[gs],[yes],[no])

dnl Detect Intel compiler.
AC_MSG_CHECKING([whether we are using the Intel C++ compiler])
AC_COMPILE_IFELSE([#ifndef __INTEL_COMPILER
choke me
#endif], [ICC=[yes]], [ICC=[no]])
if test x"$ICC" = x"yes"; then
  AC_MSG_RESULT([yes])
else
  AC_MSG_RESULT([no])
fi

dnl Set custom compiler flags when using g++.
if test "$GXX" = yes -a "$ICC" = no; then
  WARNINGCXXFLAGS="-Wall -W -Wall -W -Wunused -Wformat=2 -Wctor-dtor-privacy -Wnon-virtual-dtor -Wno-char-subscripts -Wwrite-strings -Wno-char-subscripts -Wreturn-type -Wcast-qual -Wcast-align -Wsign-promo -Woverloaded-virtual -ansi -fno-strict-aliasing -Wold-style-cast -Wno-unknown-pragmas"
fi
AC_SUBST([WARNINGCXXFLAGS])

dnl Checks for libraries.
LX_CHECK_GLPK
LX_CHECK_CPLEX
LX_CHECK_SOPLEX
LX_CHECK_COIN

AM_CONDITIONAL([HAVE_LP], [test x"$lx_lp_found" = x"yes"])
AM_CONDITIONAL([HAVE_MIP], [test x"$lx_mip_found" = x"yes"])

dnl Disable/enable building the binary tools.
AC_ARG_ENABLE([tools],
AS_HELP_STRING([--enable-tools], [build additional tools @<:@default@:>@])
AS_HELP_STRING([--disable-tools], [do not build additional tools]),
              [], [enable_tools=yes])
AC_MSG_CHECKING([whether to build the additional tools])
if test x"$enable_tools" != x"no"; then
  AC_MSG_RESULT([yes])
else
  AC_MSG_RESULT([no])
fi
AM_CONDITIONAL([WANT_TOOLS], [test x"$enable_tools" != x"no"])

dnl Checks for header files.
AC_CHECK_HEADERS(limits.h sys/time.h sys/times.h unistd.h)

dnl Checks for typedefs, structures, and compiler characteristics.
AC_C_CONST
AC_C_INLINE
AC_TYPE_SIZE_T
AC_HEADER_TIME
AC_STRUCT_TM

dnl Checks for library functions.
AC_HEADER_STDC
AC_CHECK_FUNCS(gettimeofday times ctime_r)

dnl Add dependencies on files generated by configure.
AC_SUBST([CONFIG_STATUS_DEPENDENCIES],
  ['$(top_srcdir)/doc/Doxyfile.in $(top_srcdir)/doc/mainpage.dox.in $(top_srcdir)/lemon/lemon.pc.in $(top_srcdir)/cmake/version.cmake.in'])

AC_CONFIG_FILES([
Makefile
demo/Makefile
cmake/version.cmake
doc/Doxyfile
doc/mainpage.dox
lemon/lemon.pc
])

AC_OUTPUT

echo
echo '****************************** SUMMARY ******************************'
echo
echo Package version............... : $PACKAGE-$VERSION
echo
echo C++ compiler.................. : $CXX
echo C++ compiles flags............ : $WARNINGCXXFLAGS $CXXFLAGS
echo
echo Compiler supports long long... : $long_long_found
echo
echo GLPK support.................. : $lx_glpk_found
echo CPLEX support................. : $lx_cplex_found
echo SOPLEX support................ : $lx_soplex_found
echo CLP support................... : $lx_clp_found
echo CBC support................... : $lx_cbc_found
echo
echo Build additional tools........ : $enable_tools
echo
echo The packace will be installed in
echo -n '  '
echo $prefix.
echo
echo '*********************************************************************'

echo
echo Configure complete, now type \'make\' and then \'make install\'.
echo